Twitter sued Tesla CEO Elon Musk on Tuesday to force him to complete the $44 billion acquisition of the social media company. Musk and Twitter have been bracing for a legal fight since the billionaire said Friday he was backing off of his April agreement to buy the company. In a fiery filing, Twitter accuses Musk of violating the merger agreement “because the deal he signed no longer serves his personal interests.” Twitter filed its lawsuit in the Delaware Court of Chancery, which frequently handles business disputes among the many corporations, including Twitter, that are incorporated there.